In 1614 by order of Claudius Acquaviva, General of the Society of Jesus, the right arm was severed at the elbow and conveyed to Rome, where the present altar was erected to receive it in the church of the Gesu.

About Saint Francis Xavier, SJ

Francis Xavier, born Francisco de Jasso y Azpilicueta (7 April 1506 – 3 December 1552) was a pioneering Roman Catholic missionary born in the Kingdom of Navarre (currently Spain-France) and co-founder of the Society of Jesus. He led an extensive mission into Asia, mainly in the Portuguese Empire of the time. He was influential in the spreading and upkeep of Catholicism most notably in India, but also ventured into Japan, Borneo, the Moluccas, and other areas which had thus far not been visited by Christian missionaries.

It is truly a matter of wonder that one man in the short space of ten years (6 May, 1542 - 2 December, 1552) could have visited so many countries, traversed so many seas, preached the Gospel to so many nations, and converted so many infidels. The incomparable apostolic zeal which animated him, and the stupendous miracles which God wrought through him, explain this marvel, which has no equal elsewhere. The list of the principal miracles may be found in the Bull of canonization. St. Francis Xavier is considered the greatest missionary since the time of the Apostles, and the zeal he displayed, the wonderful miracles he performed, and the great number of souls he brought to the light of true Faith, entitle him to this distinction. He was canonized with St. Ignatius in 1622, although on account of the death of Gregory XV, the Bull of canonization was not published until the following year.

Francis Xavier was born in the family castle of Xavier (Xabier, toponymic name whose origin comes from "etxaberri" meaning "new house" in the Basque language) in the Kingdom of Navarre on 7 April 1506 according to a family register. He was born to an aristocratic family of the Kingdom of Navarre, the youngest son of Juan de Jaso, privy counsellor to King John III of Navarre (Jean d'Albret), and Doña Maria de Azpilcueta y Aznárez, sole heiress of two noble Navarrese families. He was thus related to the great theologian and philosopher Martín de Azpilcueta.